pub struct ETag(pub EntityTag);
Expand description
ETag
header, defined in RFC7232
The ETag
header field in a response provides the current entity-tag
for the selected representation, as determined at the conclusion of
handling the request. An entity-tag is an opaque validator for
differentiating between multiple representations of the same
resource, regardless of whether those multiple representations are
due to resource state changes over time, content negotiation
resulting in multiple representations being valid at the same time,
or both. An entity-tag consists of an opaque quoted string, possibly
prefixed by a weakness indicator.
ABNF
ETag = entity-tag
Example values
"xyzzy"
W/"xyzzy"
""
Examples
use actix_web::HttpResponse;
use actix_web::http::header::{ETag, EntityTag};
let mut builder = HttpResponse::Ok();
builder.set(ETag(EntityTag::new(false, "xyzzy".to_owned())));
use actix_web::HttpResponse;
use actix_web::http::header::{ETag, EntityTag};
let mut builder = HttpResponse::Ok();
builder.set(ETag(EntityTag::new(true, "xyzzy".to_owned())));
Tuple Fields§
§0: EntityTag
Methods from Deref<Target = EntityTag>§
sourcepub fn strong_eq(&self, other: &EntityTag) -> bool
pub fn strong_eq(&self, other: &EntityTag) -> bool
For strong comparison two entity-tags are equivalent if both are not weak and their opaque-tags match character-by-character.
Trait Implementations§
impl StructuralPartialEq for ETag
Auto Trait Implementations§
impl RefUnwindSafe for ETag
impl Send for ETag
impl Sync for ETag
impl Unpin for ETag
impl UnwindSafe for ETag
Blanket Implementations§
source§impl<T> IntoSql for T
impl<T> IntoSql for T
source§fn into_sql<T>(self) -> Self::Expressionwhere
Self: AsExpression<T> + Sized,
fn into_sql<T>(self) -> Self::Expressionwhere
Self: AsExpression<T> + Sized,
Convert
self
to an expression for Diesel’s query builder. Read moresource§fn as_sql<'a, T>(&'a self) -> <&'a Self as AsExpression<T>>::Expressionwhere
&'a Self: AsExpression<T>,
fn as_sql<'a, T>(&'a self) -> <&'a Self as AsExpression<T>>::Expressionwhere
&'a Self: AsExpression<T>,
Convert
&self
to an expression for Diesel’s query builder. Read more